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Discussion Starter · #1 ·
I am really coming to the end of my patience with this truck, I have had so many problems it is beyond a joke (check out previous posts if you want)... Now I get the light on again, mechanic at local shop pulls the code P420 or PO420, cannor remember which, he says it is related to the cat converter. Has anyone else has this? It is a 2005 LE Crew Cab with 67,150 miles. I need help on this folks.
 

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The code is P0420. You Probably need a catalytic converter. It is covered under the federal emissions warranty.
 

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Discussion Starter · #3 ·
Thanks Mike, can you explain further how or why it would be covered? I have had so much fixed on this truck under warranty, now my extended warranty is gone (passed 60,000 miles). Appreciate any feedback
 

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Irishman: Get it fixed ASAP. NO JOKE. I had my SES light come on for the same thing after an offroad session one night. Didn't take it too seriously as the truck ran fine, 2 weeks later my motor took a sh!t. Catalytic converter broke up and motor sucked the peices back up! And I can only speak from my experience, but Nissan basically laughed at me when I ask if it was under warranty. I do have alot more miles than you, and im up in Canada, so my emission warranty may be different also.

Side note: I happen to have 2 used catalytic converters with I believe around 19K miles on them. They look to be in good condition, however they were not off my truck so I can't be sure. They came on the replacement motor I picked up for my truck, and as I put DT long tubes on I had no use for them. If I remember correctly, shipping was in the $50 range to (can't remember where) but was pretty deep into the USA from where I am located. PM if you want more details, and I will do what I can.
 

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Thanks Mike, can you explain further how or why it would be covered? I have had so much fixed on this truck under warranty, now my extended warranty is gone (passed 60,000 miles). Appreciate any feedback
If you look in the owners manual, I believe emission components are covered for 100,000 miles (or somewhere around there).
 

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If you look in the owners manual, I believe emission components are covered for 100,000 miles (or somewhere around there).
Emissions are 8yr/80k so the OP is good. Just take it to your dealer, have them pull the code and they will replace your CAT or CATs. What happens is they get clogged with crap or breakdown. Pieces end up getting sucked back into the motor and it craps out. It has happened to a few VQs and VKs in the past. This is why some have opted to go HF cats with headers (performance and CAT insurance).
 

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Mine SES light just came on today on the way to work. Same code as yours.
 

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Discussion Starter · #8 ·
Called the dealer this morning and they have ordered the part, expect it to be replaced on Thursdsay, it was covered under the 8 years / 80,000 mile warranty for emissions. Thanks to all for the quick response.
 

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What was your problem eventually? I had similar problem with an empty cat when i went to change it. my motor appears to run fine and it was stahling, not going over 3k rpms and not over 20mph. i had lots of p0300 and p0420 codes.
 
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